The British crew of a luxury yacht feared for their lives after a pod of 30 killer whales attacked their boat - and even made off the rudder.Martin Evans, 45, and Nathan Jones, 27, were part of a three-man crew delivering the vessel from Ramsgate, Kent, to Greece.The 25ft orcas bizarrely circled and smashed into the boat for two hours, before one munched on the rudder, and swam off with a chunk in its mouth.The team feared for their lives during the attack near the Strait of Gibraltar, and shocking video shows the destructive animals attack.They managed to sail the yacht to the peninsula at the southern edge of Spain, but were left stranded without a vessel when it was deemed too damaged to use.